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` p IMPROVEMENT INAPPAnArUs rou TREATING MILK.

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'T0 ALL WI-IOM IT MAYl CONCERN:

Be it known that we, Jenn A. OTIs and THoMns BARBER, of Watertown, inthe county of Jeierson, and Statepf New York, have invented a new andimproved Apparatus for Treating Milk; and we do hereby declare that thefollowing is a full, clear, and exact, description of theconstructionand operation ofthe same, reference being -had to' theannexed drawings,making a part of this specification', in which- Figure l'is a verticalcross-section. I

Figure 2 is a top view.

Figure 3 is a side elevation. v

This invention is a simple and cheap device for warming mill; in theprocess of manufacturing cheese, ahd consists in a'furnace, boiler, andmilk-tank, so constructed, arranged, and operating, that the heat isapplied uniformly at all parts of the tank where it is required, and insuch a manner as to utilize all the heat,'andl warm the milk rapidly,withoutvscorching or' injuring it in anydegree. l

In the drawings, A represents a furnace, consisting of a simpleinvertedlarch, g, of any suitable material,

having a doorat its frontend, and a flat rectangular opening, c, attheuppa'er edge of its rear'or inner end. Around this inverted arch is ajacketror surrounding arch, a a', also inverted in shape,like theformer, and having its walls separated from the inner walls a a by a'narrow space, which is filled with water from above. The upper side ofthe furnace A is closed water-tight, tbc upper side of the.enclosingjacket a is open, and connectedfwith a flat` rectangularboiler, B, of the form and .relative dimensions seen in figs. 1 and 2,so that when such boiler is filled withiwater, the water covers the topofthe furnace, and iows down between thev walls a a', as shown by thered lines of fig. 1. The dat fine C, starting from the upper and inneredge of the furnace at the opening c, passes around the boiler in ahorizontal direction, as seen in'iig. 42, terminating finally in asmoke-pipe, D, its position in the boiler being such that'when. thelatter is filled with water, Athe flue is submerged,

as shown 'in section in fig, 1. l

I 'In connection' vwith this apparatus, we use a milk-tank, E, whichtits into the rectangular' boiler, as seen in iig. 1, its bottom.resting in the water, above the flue C, and receiving thel heatcommunicated therefrom. By

making the flue fiat and wide, as shownyit occupies less vertical spacethan if it were made round, and therebyV 'Saves material, besidesradiating inorcheat. By extending it around'the edge of the boiler, itsradiating 'surface is increased, and thevheat is lconducted directly toeverypart of the boiler, and communioatedto the water .therein in auniform and equable manner, so that, the water being uniformly heated,-it in turn uniformly applies .the heat to the milk, preventing theundue heating of any part ofthe latter. l

The whole device is exceedingly simple, cheap, and-convenient ofoperation, besides accomplishing the results above described quicker undin a better manner than 4by any apparatus hitherto in use for ythepurpose.

We do not claim, as our invention, a furnace surrounded with water, thewaterspace and the furnace being connected by pipes with theAwater-space under and around the milk-pan, for we are aware that suchdevice is old, being shown in the patents of H. A. Roe and others. Ourapparatus is more neatly and cheaply confV structed vthan such deviceslas Roes, the boiler, furnace, and iiues being arranged much morecompactly,lland the whole'costing but a trifle, as compared with the'olddevices. In our apparatus, it will be observed, the

boiler and furnace compose but a .single vessel, while the entire heatof the reis radiated from the long con- -eluted pipe, C, -in its coursethrough the boiler. The compact furnace and boiler thus made in the formof a :single vessel, and the convoluted pipe C, when constructed andarranged together as described, constitute the most :important featuresof` Aour invention. Without these parts, arranged as described, 'we layno claim to novelty in its constructionpbut with them we havedemonstrated, by a long .course of practical experiment, thatthcapparatns is superior to all others heretofore brought into use for asimilar purpose.

Having thus' described our invention, whatwe claim as new, and desire tosecure by Letters Pat-ent, is- The arrangement of the double-walledfurnace A, with the boiler Band iues C (herben the furnace is made apart or extension of the boiler, and the ues are convoluted or bent backand forth, as shown, all the said parts being constructed, combined, andarranged in the manner described. JOEL A. OTI-S.

THOMAS BARBER.

i Witnesses:

Grnnnaor Lone, Gao. MQSTowE.

